Clematis terniflora |
Clematis texensis |
|
---|---|---|
sweet autumn clematis, sweet autumn virginsbower, yam-leaf clematis, yam-leaf virgin's-bower |
crimson clematis, scarlet clematis, scarlet leather flower, Texas clematis |
|
Stems | climbing with tendril-like petioles and leaf rachises, 3-6 m. |
viny, to 3 m, glabrous or sometimes ± hirsute near nodes. |
Leaf | blade pinnately 3- or 5-foliolate; leaflets ovate or broadly lanceolate to narrowly deltate, to 6.5 × 3.5 cm, margins entire; surfaces abaxially glabrous or very sparingly appressed-strigose on major veins. |
blade 1-pinnate; leaflets 6-10 plus additional tendril-like terminal leaflet, ovate to nearly round, unlobed, 2-3-lobed, or most proximal occasionally 3-foliolate, 1-9 × 1-6 cm, leathery, ± prominently reticulate adaxially; surfaces abaxially usually glabrous, occasionally sparsely pubescent, glaucous. |
Inflorescences | axillary, 3-12-flowered cymes or compound cymes or paniculate with cymose subunits. |
axillary, 1-7-flowered. |
Flowers | bisexual, often some unisexual (staminate) in same inflorescence; pedicel 1-3.5 cm, slender; sepals wide-spreading, not recurved, white, linear or elliptic to lanceolate or narrowly obovate, 0.9-2.2 cm, length ca. 2-3 times width, abaxially tomentose along margins, adaxially glabrous; stamens ca. 50; filaments glabrous; staminodes absent; pistils 5-10. |
ovoid to urn-shaped; sepals rose-red to scarlet abaxially and at tip adaxially, ovate-lanceolate, 1.5-3 cm, margins not expanded, thick, not crispate, tomentose, tips acute to acuminate, recurved, abaxially glabrous. |
Achenes | broad, flat, conspicuously rimmed, minutely appressed-silky, sometimes sparsely so; beak 2-6 cm. |
bodies appressed-pubescent; beak 4-7 cm, plumose. |
2n | = 16. |
|
Clematis terniflora |
Clematis texensis |
|
Phenology | Flowering summer (Jul–Sep). | Flowering spring–summer (Mar–Jun). |
Habitat | Roadsides, thickets, and other secondary sites, edges of woods near creeks | Woodlands, calcareous cliffs, and stream banks |
Elevation | 0-1000 m (0-3300 ft) | 80-700 m (300-2300 ft) |
Distribution |
AL; AR; CT; FL; GA; IL; IN; KS; KY; LA; MA; MD; MO; MS; NC; NE; NH; NJ; NY; OH; OK; PA; SC; TN; TX; VA; WV; ON; native to Asia (China, Korea, Japan) [Introduced in North America]
|
TX
|
Discussion | Clematis terniflora is commonly cultivated as an ornamental. It is widely naturalized in the eastern United States. The name C. paniculata J. F. Gmelin was incorrectly used for this species by Thunberg in 1794. Some authors have recognized two or more varieties in this species, correlated with their distribution in Asia, but in the study by H.Hara (1975), all of the varietal names were reduced to synonymy. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Although widely cultivated because it is the only species of Clematis with truly red flowers, C.texensis is native only to the southeastern part of the Edwards Plateau, Texas. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Clematis > subg. Clematis | Ranunculaceae > Clematis > subg. Viorna |
Sibling taxa | ||
Synonyms | C. dioscoreifolia, C. dioscoreifolia var. robusta, C. maximowicziana | Viorna coccinea |
Name authority | de Candolle: Syst. Nat. 1: 137. (1817) | Buckley: Proc. Acad. Nat. Sci. Philadelphia 13: 448. (1862) |
Web links |